<?php
if(isset($_POST)) {
    require_once 'ORM/conectar.inc.php';
    $usuario = filter_input(INPUT_POST, 'usuario', FILTER_SANITIZE_STRING);
    $password = filter_input(INPUT_POST, 'password', FILTER_SANITIZE_STRING);
    
    $sql = "SELECT idUsuario FROM usuarios WHERE usuario = '".$usuario."' AND password = '".$password."'";
    $r = mysql_query($sql) or die(mysql_error());
    $arr = mysql_fetch_assoc($r);
    
    if($arr['idUsuario'] > 0) {
        session_start();
        $_SESSION['SID'] = $arr['idUsuario'];
        header("location: index.php");
    }
}
?>
<!DOCTYPE html>
<html>
  <head>
    <title></title>
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <!-- Bootstrap -->
    <link href="css/bootstrap.min.css" rel="stylesheet" media="screen">
    <script type="text/javascript" src="js/jquery-1.8.2.min.js"></script>
    <script type="text/javascript">
        $(document).ready(function() {
            $("#usuario").focus();
        });
    </script>
     <style type="text/css">
      body {
        padding-top: 40px;
        padding-bottom: 40px;
        background-color: #f5f5f5;
      }

      .form-signin {
        max-width: 300px;
        padding: 19px 29px 29px;
        margin: 0 auto 20px;
        background-color: #fff;
        border: 1px solid #e5e5e5;
        -webkit-border-radius: 5px;
           -moz-border-radius: 5px;
                border-radius: 5px;
        -webkit-box-shadow: 0 1px 2px rgba(0,0,0,.05);
           -moz-box-shadow: 0 1px 2px rgba(0,0,0,.05);
                box-shadow: 0 1px 2px rgba(0,0,0,.05);
      }
      .form-signin .form-signin-heading,
      .form-signin .checkbox {
        margin-bottom: 10px;
      }
      .form-signin input[type="text"],
      .form-signin input[type="password"] {
        font-size: 16px;
        height: auto;
        margin-bottom: 15px;
        padding: 7px 9px;
      }

    </style>
  </head>
   <body>

    <div class="container">

      <form class="form-signin" method="post" action="<?php echo $_SERVER['PHP_SELF']; ?>">
        <h2 class="form-signin-heading">Ingresar</h2>
        <input type="text" id="usuario" name="usuario" class="input-block-level" placeholder="Usuario" />
        <input type="password" name="password" class="input-block-level" placeholder="Password" />
        <label class="checkbox">
          <input type="checkbox" value="remember-me"> Remember me
        </label>
        <button class="btn btn-large btn-primary" type="submit">Sign in</button>
      </form>

    </div>
  </body>
</html>